Sheet feed rotary printing press



Jan. 1, 1935. H. M. BARBER SHEET FEED ROTARY PRINTING PRESS Filed Nov. 9, 1933 ATTORNEYS Patented Jan. 1,, 1935 I H.; 1,986,$S5 'snE 'r E ROTARY PRlNTING ranss Howard Barber, Pawcatuck, Conn assignor to 0.13. Cottrell & Sons Company, Westerly, R. I.,

a corporation of Delaware Application Novemberll, 1933, Serial'No. 697,298

4 Claims. (mini-1174 The object of my invention is to provide in a sheet feed rotary multi-color printing press, a novel arrangement of the form cylinders around their impression cylinder and a novel arrangement of the sheet feeder and sheet delivery whereby ample space will be provided for makeready on the impression cylinder.

My invention is shown in connection with a sheet feed rotary five color printing press in which the sheet feeder and the sheet delivery are located upon opposite sides of the impression cylinder in position to respectively feed the sheets to and deliver them from the impression cylinder at the under side thereof; and in which the five form cylinders are arranged around the impression cylinder, three form cylinders on the feeder side of the impression cylinder (two above and one below the center thereof) and two form cylinders on the delivery side of the impression cylinder, (both above its center) thereby leaving a considerable space between the delivery and the last form cylinder, for permitting ready access to the impression surface for make-ready.

The accompanying drawing illustrates in diagrammatic side elevation a sheet feed rotary five color printing press embodying my invention.

The five form cylinders are denoted by 1, 2,

3, 4, 5, and their respective inking mechanisms by 6, 7, 8, 9, 10. The impression cylinder 11 is shown as twice the diameter of the form cylinders, which impression cylinder is provided with two diametrically opposed sets of sheet grippers12, 13.

The sheet feeder which is located at one side of the impression cylinder includes a sheet feeding cylinder 14 of the same diameter as the impression cylinder 11, which sheet feeding cylinder is provided with two diametrically opposed sets of sheet grippers 15, 16, arranged to take the sheets at the under side of the feedingcylinder and feed the sheets to their respective impression cylinder sheet grippers 12, 13, at the under side of the impression cylinder.

The sheet delivery which is located on the opposite side of the impression cylinder from the sheet feeder includes a horizontally disposed endless chain carrier 1'7 provided with sets of grippers 18 spaced the proper distances apart to suecessively take the printed sheets from the impression cylinder grippers 12, 13, when they are at the under side of the impression cylinder.

It will be noted that the sheets are fed to and delivered from the impression cylinder as near the bottom of the cylinder as possible.

The grouping of the form cylinders is as follows:

Three form cylinders are located on the feeder side of the impression cylinder, two above and one below its center, and the remaining two form cylinders are located on the delivery side of the impression cylinder, both above its center. This arrangement locates the last form cylinder 5 suificiently above the sheet delivery to provide ample space between the sheet delivery and the last form cylinder for make-ready on the impression cylinder.

From the above description it will be seen that not only is there ample space provided for the ready access to a considerable portion of the impression cylinder surface but also the sheet delivery is so located as to bring the printed sheets into full view of the operator as they are delivered from the impression cylinder. It will also be seen that by providing a sheet feeding cylinder of considerable size the feeding of the sheets from their table can be readily accomplished without conflicting with the form cylinders and their inking mechanisms.

It is evident that various changes may be resorted to in the construction, form and arrangement of the several parts without departing from the spirit and scope of my invention, and hence I do not intend to be limited to the particular embodiment herein shown and described, but

What I claim is: v

1. In a sheet feed rotary five color printing press, an impression cylinder, a sheet feeder and a sheetdelivery located on opposite sides of the impression cylinder and arranged to feed the sheets to and take them from the under side of the cylinder, and five form cylinders grouped around the impression cylinder, three form cylinders on the feeder side and two form cylinders on the delivery-side of the impression cylinder to leave ample space for make-ready on the impression cylinder between the sheet delivery and last form cylinder.

2. In a sheet feed rotary'five color printing press, an impression cylinder, a sheet feeder and a sheet delivery located on opposite sides of the impression cylinder and arranged to feed the sheets to and take them from the under side of the cylinder, and five form cylinders grouped around the impression cylinder, three form cylinders on the feeder side, two above and one below the center, and two form cylinders on the delivery side of the impression cylinder, both above its center, to leave ample space for makeready on the impression cylinder between the sheet delivery and last form cylinder.

3. In a sheet feed rotary multi-color printing press, an impression cylinder, a sheet feeder located on one side of the impression cylinder and including a sheet feeding cylinder arranged to feed the sheets to the under side of the impression cylinder, a sheet delivery located on the opposite side of theimpression cylinder and arranged to take the sheets from the under side of the impression cylinder, and five form cylinders grouped around the impression cylinder to the opposite side of the impression cylinder and arranged to take the sheets from the under side i v fi ifi cc i ez qdfi e. 93m, cyhn' ders grouped a Him the impression cylinder, three form cylinders on the feeder 'side and two form cylinders on the delivery side of the imiirssion cylinder, to leave ample space for j gnalge-ready onthe impression cylinder between sheet delivery and last form cylinder, the prs sion and sheet feeding cylinders being twice the 'diam'et'ers of the form cylinders and each having two diametrically opposed sets of -grippers; HOWARD M. BARBER. 

